I didn’t know there was a rewritable dvd format. My dad had a bunch of dvds, I used to love sneaking one off to play on my computer when I was a kid, since he stopped noticing when he got into bluray
Readit Newskarlgkk commented on Tested: How Many Times Can a DVD±RW Be Rewritten? Methodology and Results goughlui.com/2026/03/07/t... · Posted by u/giuliomagnifico
karlgkk commented on Bluesky CEO Jay Graber is stepping down bsky.social/about/blog/03... · Posted by u/minimaxir
It is ok if you just didn’t/don’t know what people were talking about, I hope you are doing well.
To put my point as simply as possible for someone that isn’t ‘terminally online’ and understands that ‘posting isn’t praxis’ but also uses those phrases unprompted: People have criticized Jay for getting Poster’s Madness because of a time when she, as an admin, appeared to respond to any criticism saying everybody else has Poster’s Madness.
im also one of those people who is struggling to understand why people seem so passionate. its a twitter clone.
i also dont know whats going on, although it is a obscure drama from a relatively small community
i think maybe that is this disconnect. that relatively small community is extremely important to you but many other people here lack similar footing. i dont think the hostility is warranted but i can feel myself furrowing my brow and asking out loud what is happening when i read some of the posts from bluesky users in this thread
i guess i am glad i never got big into twitter or bluesky or the attention economy
There are two versions of MPK. One is only applicable to userspace pages. The other is newer and can be applied to kernel space pages; last time I checked, this was only available on newer Xeon processors.
By the way, MPK memory is not encrypted. The key is just an identifier for the requestor. If the requestor key doesn’t match the same identifier for the memory page, then an exception is raised.
Funnily enough, MPK isn’t new at all. It’s almost a reintroduction of a feature from Itanium.
Aw, so I was half right. I knew the newer one, which is MPS, will throw a page fault. Sorry, it’s been a while since I’ve done this stuff and we were mostly working with tz
"On x86-64, there are two CPU settings which control the kernel’s ability to access memory."
There are a couple more than two, even in 2021.
Memory Protection Keys come to mind, as do the NPT/EPT tables when virtualization is in play. SEV and SGX also have their own ways of preventing the kernel from writing to memory. The CPU also has range registers that protect certain special physical address ranges, like the TDX module's range. You can't write there either.
That's all that comes to mind at the moment. It's definitely a fun question!
a thought: do MPK actually control the kernel's ability to access memory? on intel, i think if you try to read that memory, a page fault wont be thrown. although with PKS, kernel reads will cause a page fault.
so can the kernel (ring0) freely read/write to memory encrypted with MPK? I think so, yes. good luck with whatever happens next tho lol
karlgkk commented on Chaos and Dystopian news for the dead internet survivors fubardaily.com... · Posted by u/anonnona8878
front page has racial slurs, a link to goatse, and something crass about trans women. fantastic work /s
karlgkk commented on CERN rebuilt the original browser from 1989 (2019) worldwideweb.cern.ch... · Posted by u/tylerdane
Did you notice you can click anywhere in the text and edit it?
Something was lost along the way.
(Nowadays you need a separate wiki engine on a site to be able to do that)
> (Nowadays you need a separate wiki engine on a site to be able to do that)
No you don’t. These browser simply PUTs the request and your web server simply edits the document. Versioning is optional, of course.
In my society, absolutely, possibly literally more than a hundred people.
Where in the world is the answer no? Maybe if you’ve freshly immigrated to a new country or something?
That is a very scary thought, but it’s also scary for me to think that so many people live such isolated lives, it’s such a foreign concept to me culturally.
The answer is no when you are severely mentally ill or have some other condition that causes you to be strongly detrimental to the people around you, such as addiction.
To the point where you have no friends. To the point where even your own parents have given up.
> Where in the world
Everywhere. You can’t comprehend it because you don’t know anyone like that, likely because the government you live in takes care of that problem for you.
> isolated lives
And by the way, the people in your culture in this situation are isolated too, from you. And that’s okay, and maybe good even. But you don’t know about them.
I don’t know what the right answer is. America’s answer is definitely not the right answer. But interrogate your culture, too, and how it takes care of your most vulnerable people. You may be dismayed at the answer, or you may not.
I will never stop being dumbfounded by the contrast of people going through this kind of hardship being surrounded by some of the wealthiest people in the world. This exists in other parts of the world as well, of course, but it's particularly troubling that it exists in the tech epicenter.
There's something deeply disturbing about a society that allows this to happen, and yet it's something we've learned to accept and largely ignore for centuries. The promise of technology bringing forth universal prosperity is a lie promoted by those who have something to gain from that narrative. Yet we keep believing these people to this day.
If you needed a bed for the night, do you have friends who would offer you their couch? Family? Cousins, parents, etc?
karlgkk commented on A few random notes from Claude coding quite a bit last few weeks twitter.com/karpathy/stat... · Posted by u/bigwheels
We can observe how much generic inference providers like deepinfra or together-ai charge for large SOTA models. Since they are not subsidized and they don’t charge 7x of OpenAI, that means OAI also doesn’t have outrageously high per-token costs.
Actually, that doesn’t mean anything.
OAI is running boundary pushing large models. I don’t think those “second tier” applications can even get the GPUs with the HBM required at any reasonable scale for customer use.
Not to mention training costs of foundation models
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